* Tables containing links with a link text were misparsed, because the "|"

* Tables containing links with a link text were misparsed, because the "|"
  in the wikilink looked like a table field separator. Avoid this ambiguity
  by linkifying the data before parsing it as a table.
* Turn on allow_loose_quotes in the table plugin's Text::CSV object,
  so that links from wikilinks don't confuse the parser.